The hole size tolerance on Swarovski 6mm bicones is .9-1.1mm, so probably not. The tolerance on their 8mm bicones is 1.1-1.3mm, so chances are good the chain will fit through. Other styles of Swarovski crystal bead have different hole size ranges, but I can research specific individual items as needed.

The 40-099-09-3 flattened cable chain is definitely too fine to go directly onto an ear wire's loop without assistance. Very thin jump rings will go directly into the links, but the thinner the jump ring, the weaker it is. 2 solutions I can think of, to make a more secure piece of jewelry are:- Widen the top link (that you're going to hook onto your ear wire) with an awl or pushpin. I put the chain on a piece of styrofoam or a phone book (I look up all my phone #'s and addresses on the internet now anyhow - so might as well use the phone book for something!), then gently "round" the end link by poking an awl or pushpin into it. This will allow it to fit onto a larger jump ring, or possibly even a fine-gauge ear wire.- The other solution is to use fine-gauge wire or thin head pins and wire-wrap your components together. Make a small beaded dangle to decorate the top, and before you close the loop, slide both your ear wire and the chain onto it, then wire-wrap it closed. Then decorate the rest of the chain as desired. You would get an effect similar to these chain earrings or this pair of ear thread earrings (but with a dangle or 2 at the very top, instead of beginning at the middle).